This article concerns the development of archaeology and museology, in the Ottoman Empire, Turkey, and Greece, through the life and career of Théodore Macridy. Macridy participated in knowledge transfer in more than one discipline and more than one country. Through his links with Western academic circles in archaeology and museology, he made a significant contribution to their development in the Ottoman Empire, Turkey, and Greece. Living between the Ottoman and Greek epistemic communities as an Ottoman citizen of Greek origin, he excavated numerous sites of the Ottoman Empire, worked at the Ottoman Imperial Museum, and contributed to the foundation of the Benaki Museum in Athens at the end of his career. This makes him a good example of an Ottoman Greek scholar whose liminal identity led to his relative neglect in both Greek and Turkish archaeology and museology.